A quick review of the Cartesian Coordinate system, including formulas for length and slope of a line segment. It also provides and introduction to the graphing applet used in this lab and others.More: lessons, discussions, ratings, reviews,...

This activity is perfect for grade 7 and 8 students who are just learning about slope. The tutorial applet allows students to drag collinear points on a plane. As they move the points, the students wi...More: lessons, discussions, ratings, reviews,...

Guided activities with the Graph Explorer applet, in which students explore how the graph of a linear function relates to its formula, and learn to graph and edit functions in the applet, including on...More: lessons, discussions, ratings, reviews,...

How does changing the slope of a line affect the equation of that line? How might changing a part of an equation cause the related line to move? Explore these challenges using the Linear Transformer t...More: lessons, discussions, ratings, reviews,...

These activities use the Function Analyzer tool to reveal the connection between symbolic and graphic representations in equation solving. The document includes a series of exercises for single equati...More: lessons, discussions, ratings, reviews,...

This eModule uses interactive graphs to help students deepen their understanding of slope and extend the definition of slope to writing the equation of lines. Online worksheets with immediate feedback...More: lessons, discussions, ratings, reviews,...

Compare different representations of motion: a story, a position graph, and the motion itself. Create a graph that matches a story, or write a story to match a graph, and check either by watching Mell...More: lessons, discussions, ratings, reviews,...

This is a computer activity using Sketchpad and specially selected pictures located online (SlopePix web page) to help students understand the concept of slope. Following the instructions, students...More: lessons, discussions, ratings, reviews,...

Students use a two-player game to develop and refine their sense of the slopes of lines. The link to the activity itself is to a zip file that contains both the activity in pdf format and the corr...More: lessons, discussions, ratings, reviews,...

A video that focuses on the TI-Nspire graphing calculator in the context of teaching algebra. In this program the TI-Nspire is used to explore the nature of linear functions. Examples ranging from ...More: lessons, discussions, ratings, reviews,...

This activity focuses on:
* graphing an ordered pair, (a, f(a)), for a function f
* the connection between a function, its table, and its graph
* the interpretation of the horizontal coordinate o...More: lessons, discussions, ratings, reviews,...

In this activity, students investigate the “negative reciprocal” relationship between the slopes of perpendicular lines. The final phase of the activity is appropriate for more advanced students as th...More: lessons, discussions, ratings, reviews,...

Students model linear data in a variety of settings that range from car repair costs to sports to medicine. Students work to construct scatterplots, interpret data points and trends, and investigate t...More: lessons, discussions, ratings, reviews,...

Students have an opportunity to identify an outlier within a set of real-life data. Using the Illuminations Line of Best Fit Interactive, students plot sets of data. Within each of these sets of data,...More: lessons, discussions, ratings, reviews,...

In this year-long project, students design, "build," and "sell" a house; after which they simulate investment of the profits in the stock market. Along the way, students make scale drawings, compute w...More: lessons, discussions, ratings, reviews,...

This lesson is designed to introduce students to the idea of functions composed of two operations, with specific attention to linear functions and their representations as rules and data tables, inclu...More: lessons, discussions, ratings, reviews,...

This eModule uses interactive graphs to help students deepen their understanding of slope and extend the definition of slope to writing the equation of lines. Online worksheets with immediate feedback...More: lessons, discussions, ratings, reviews,...

This packet contains a copy of the original problem used to create the activity, rationale and explanation behind the “Change the Representation” focal activity, and some thoughts on why this activity...More: lessons, discussions, ratings, reviews,...

This packet contains a copy of the original problem used to create the activity, rationale and explanation behind the “I Notice, I Wonder” focal activity, and some thoughts on why this activity works ...More: lessons, discussions, ratings, reviews,...

This packet contains a copy of the original problem used to create the activity, rationale and explanation behind the “Doing it Wrong” focal activity, and some thoughts on why this activity works well...More: lessons, discussions, ratings, reviews,...

This packet contains a copy of the original problem used to create the activity, rationale and explanation behind the “Change the Representation” focal activity, and some thoughts on why this activity...More: lessons, discussions, ratings, reviews,...

This packet contains a copy of the original problem used to create the activity, rationale and explanation behind the “Make a Mathematical Model” focal activity, and some thoughts on why this activity...More: lessons, discussions, ratings, reviews,...

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s)
and do not necessarily reflect the views of the
National Science Foundation.